Elected mechanical gong



(No Model.) 2 Sheets-Sheet 1. F. W. COLE. ELECTED MEGHANIGA L GONG.

No. 452,931. Patented May 26,1891.

2 Sheets-Sheet 2.

(No Model.) V

F. W. COLE. ELECTED MECHANICAL GONG. No. 452,931. Patented May 26,1891.

llllllllll IIIIIIIH Illlll UNITED STATES PATENT FFICE.

FREDERICK IV. COLE, OF NElVTON, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO MOSES G. CRANE, OF SAME PLACE.

ELECTRO-M ECHAN [CAL GONG.

SPECIFICATION forming part of Letters Patent N 0. 452,931, dated May 26, 1891. Application filed December 9, 1890. Serial No. 374,089. (No model.)

To aZZ whom, it may cmwcrn; provided with a lateral projection, as 2, (see Be it known that I, FREDERICK \V. COLE, dotted lines and full lines, Fig. 7,) which rests of Newton, county of Middlesex, State of Masupon a guide-faced portion, as c, of the main sachusetts, have invented an Improvement in frame-work. The ends of the pawls Z7 b are 5 Electro-Mechanical Gongs, of which the folarranged to occupy the path of movement of lowing description, in connection with the 210- the teeth of the ratchet-toothed wheel a to companying drawings, is a specification, like be moved thereby. As the ratchet-wheel reletters and figures on the drawings rcpresentvolves, first one of the pawls, as Zr, which is in g like parts. in engagement with a tooth of said wheel, will IO This invention has for its object to improve be moved thereby, the pressure upon it holdthe construction of electromechanical gongs, ing said pawl in elevated position, and during the chief aim being the production of a quicksaid movement the striking arm or lever 11 acting gong. will be moved on its pivot I) in the direction In accordance with this invention the of the arrow thereon, and the pawl I) will be 5 striker is designed to strike thegong on each moved in the opposite direction to the pawl and every stroke in either direction. Acon- 6 its pin 2 following up the inclined guidetrolling mechanism is provided for the strikface until the end of said pawl b st-rikes one of ing arm or lever, which is designed to lock it the advancing teeth of the ratchet-wheel,and at or near the end of its stroke in each direcon account of the momentum of the hammer 20 tion, which position is the beginning of its the wheel will then be forced backward until advancing stroke in each direction. Suitable the bell is struck, and on such retrograde moreleasing mechanism is provided for the contion the pawl b will be released, dropping trolling mechanism, which is governed by the onto the lower part of the guide-faced porarmature of an electro-magnet. t-ion. Thus it will be seen that the pawls 11 5',

5 Figure 1 shows in front elevation an elecco-operating with the guide-facecand moved, tro-mechanical gong embodying this invenas described, by the ratchet-wheel a, serve as tion; Fig. 2, adetail of a portion of the cona means for moving the striking arm. or lever trolling mechanism and the releasing meehb first in one and then in the opposite direcanism shown in Fig. 1, the parts being in a tion positively.

3 diiferentposition; Figs. 3 andat, modifications Thecontrolling mechanism for the striking to be referred to; Fig. 5, a detail of Fig. 1, arm or lever 11 consists of an arm (I, pivoted the parts being in different positions; Fig. 6, at d, and preferably weighted, as at (P; or it a left-hand side View of the gong shown in may be spring-pressed, said arm (Z having 011 Fig. 1; Fig. 7, an underside view of the gong it at each side of its pivot d locking pro ec- 35 shown in Fig. 1. tions 3 4t, and said arm d has a vertical eX- The frame-work is of any usual or suitable tension (l to which one end of a spring 01 is construction to support the operating parts. connected, the opposite end of said spring Mounted on the win din g-shaft a is a ratchetbeing connected to a double-toothed let-off d", toothed wheel a, which is revolved by means pivoted at r to the striking arm or lever 12,

40 of the main spring a on said shaft. The one tooth of said let-off, as (1 being adapted striking arm or lever b is pivoted at b to the to engage with the projection 3 on the arm (Z, framework and has at its outer end a hamand the other tooth of said let-off, as (1 bemerb which strikes the gong I), (see dotted ing adapted to engage with the other pro eclines, Fig. 1,) and said striking arm or lever tion i on the arm (Z as the striking arm or 1c- 5 i) has at its opposite end two pawls U I), one ver assumes its difl'ercnt-positions, and acting of which islooselyconneeted to the said Strikto hold the striking arm or lever 11 at the being arm or lever at one side of its pivot b, and ginning of each stroke. the other of which is looselyconnected to the The releasing mechanism for the controlsaid striking arm or lever at the opposite side ling-arm d consists of a three-pin releasing- 50 of its pivot 11, and said pawls b? b are each lever e, pivoted at e and having at one end three pins or projections 5 6 7, which scparately co-operate with a projection 8 0n the armature c of the electro-magnet e The three-pin releasing-lever has formed on it two shoulders 9 10, with one or the other of which the end of the controlling-lever d engages, according to the direction in which the said controlling-lever has a tendency to be moved, which direction is determined by the position of the hammer-arm b. WVith the parts in the position shown in full lines, Fig. 1, the armature c is in its attracted position, and the parts are thereby at rest. When the parts are in this position, the controlling-lever d bears heavily on the shoulder 10 by the spring (1 which is held taut by the locked striking arm or lever. hen the armature e is re tracted, the three-pin releasing-lever 2 will be moved into the dotted-line position shown in Fig. 1 by the action of the controlling-lever cl on it, and as the said three-pin releasinglever assumes its dotted-line position the shoulder 10 is removed from beneath the controlling-lever d, and the latter thus released is moved into the dotted-line position shown in Fig. 1 by means of the spring (1, and as said controlling-la er (1 assumes its dotted line position the projection 3 is removed from engagement with the tooth d of the doubletoothed let-oft, thereby releasing the striking arm or lever b, and the spring-actuated ratchet-wheel a then acts on the pawl d and moves said striking arm or lever 1) into the position shown in detail, Figs. 2 and 5, so that the hammer will strike the gong. As the striking arm or lever 11 is moved into its position to strike the first blow, as described, the double-toothed let-off (1 carried by it, moves the spring (1 from its position, as shown in Fig. 1, at one side of the pivot (1 into the position shown in Figs. 2 and 5 at the opposite side of the pivot 01, and said spring, drawing upon the controlling-lever d, lifts it until its outer end strikes the shoulder 9 of the releasing-lever 6, moving said lever c from the dotted-line position shown in Fig. 1 to the full-line position shown in Fig. 2, the pin 6 at such time engaging the projection 8 on the armature e. The projection lwill be engaged by the tooth d of the double-toothed let-off to thereby hold the striking arm or lever 1) in such position near the opposite side of the gong h or at thebeginning of its return-stroke. The parts will remain in this position as long as the armature remains retracted, and when the armature is next attracted the pin 6 on the three-pin releasinglever e is released, and said lever c is moved by the action of the controlling-lever d on it into the dotted-line position shown in Fig. 2, at which time it will be caught and held by the projection 7 engaging the projection 8 on the attracted armature. hen the armature e is a second time retracted, the pin 7 will be disengaged, and the three-pin releasing-lever e will be moved by the pressure of the controlling-lever cl on it into the position shown in full lines, Fig. 5, at which time the shoulder 9 will be removed from its engagement with the controlling-lever and the latter released. The controlling-lever d being thus released, the projection 4 will be removed from the position shown in Fig. 2 to position shown in full lines, Fig. 5, and will release the double-toothed let-off (1 thereby placing the striking arm or lever I) again under the control of the spring-actuated ratchet-wheel a, and said wheel, engaging the pawl Z), will return the said striking arm or lever to the position shown in Fig. 1, carrying with it the said double-toothed let-off, that thelatter may engage the projection 3 on the controlling-leverd, and asthe said striking-arm resumes this position the spring (1 will be also returned to its first position, and, drawing upon the said controlling-lever cl, will move it, so that its outer end will engage the shoulder 10 on the three-pin releasing-lever, as represented in full lines, Fig. 1, and as said controlling-lever strikes the shoulder 10 the said three-pin releasing-lever is restored to aposition with the projection 6 against the projection 8, as shown in dotted line, Fig. 5, until the armature is again attracted when the parts will assume the position shown in full lines, Fig. 1.

Limiting-stops 20 are provided, one at each side of the let-off d, to limit its movement in each direction, and limiting-stops 21 are also provided for the controlling-lever (1. Thus it will be seen that at each impulse the striking arm or lever will be moved to strike the gong, and that the said striking arm or lever is operated to strike the gong at the end of its stroke in each direction.

In litsl of the three-pin releasing-lever 6, (shown in Fig. 1,) I may employ areleasing-lever, as shown in Fig; 3, on which pins 5 and 7 are arranged, one at each side of the pivot e, and an arm n is secured to the armature e which strikes one of the said pins at each time the armature is attracted, it being herein shown as arranged to strike the pin 7 only when the armature is attracted and the controlling-lever d bears against the shoulder 10, and to strike the pin 5 when the armature is attracted and the controlling-lever (l bears against the shoulder 9. The upper end 6 of the lever c is adapted to engage the projection 8 on the end of the armature 6 when said armature is retracted, as shown. The lever 6, having the ends 6, and the pins 7 5, as just described, constitute the three-pin releasing -lever. The releasing-lever e, such as shown in Fig. 4, may be attached to the armature or have formed on it or secured to it the pins 5 6 7, and, furthermore, in lieu of the double-toothed let-oft (1 (shown in Fig. 1) two let-offs, as f f pivoted to the-controlling arm or lever d, one at each side of its pivot d, and made spring-pressed by means of the spring f may be employed to co-operate with a lateral-projection f on the striking arm or lever 17. So it will be seen that I do not desire to limit myself to the specific construction shown, as some of the features may be of great utility in connection with gongs of different makes.

I claim 1. In an electromechanical gong, a striking arm or lever and means for moving it positively in each direction to strike a blow, and controlling mechanism which engages said striking arm or lever after each movement, combined with releasing mechanism for said controlling mechanism governed by the armature of the electro-magnet e", substantially as described.

2. In an electromechanical gong, the striking arm or lever b and means for moving it positively in each direction to strike a blow, combined with controlling mechanism for said striking arm or lever, and releasing mechanism therefor governed by each move ment of the armature of the electro-magnet e, substantially as described.

3. In an electro-mechanical gong, the striking arm or lever b and controlling mechanism therefor, comprising a controlling-lever and letoif, which are operated in each direction by the striking arm, combined with releasing mechanism forsaid controlling mechanism, governed by the armature of the electro-magnet e substantially as described.

4. In an electro-mechanical gong, the striking arm or lever b. and means for moving it positively in each direction, combined with controlling mechanism for said arm or lever b, consisting of the controlling arm or lever and let-off, and releasing mechanism for said controlling-lever cl, consisting of a three-pin releasing-lever controlled bythe armature of the electro-magnet 6 substantially as described.

5. In an electro-mechanical gong, the strikin g arm or lever movable positively in each di- 1 rection to strike a blow and controlling mechanism therefor, connected with said striking arm or lever by a spring, combined with releasing mechanism for said spring-actuated controlling mechanism, an electro-magnet, and

its armature governing the operation of the releasing mechanism, substantially as described.

6. In an electromechanical gong, the striking arm or lever b and means for moving itpositively in each direction, and a controlling mechanism for said striking arm or lever, combined with releasing mechanism for said controlling mechanism, moved positively by one of the members of said controlling mechanism and governed by the armature of the electro-magnet a, substantially as described.

7. A vibrating, arm, as 6 carrying the projection 8, an operator for it, as the magnet e a motor mechanism, and a releasing-lever therefor, as 6, having the projections 5 6 7, which co-operate with the projection 8 on the vibrating arm to release the motor mechanism on each complete vibration of said arm e one pin, as 6, having two locking-faces,

and the two pins 5 7, having but one lookingface, substantially as described.

8. The magnet and its armature having the locking projection, as 8, combined with the three fixed pins 5 6 7, arranged on a vibrating lever, which pins co-operate with the projection 8 of the armature, substantially as described.

9. The magnet and its armature having the locking projection, as 8, combined with the vibrating lever having on it three fixed pins, two of which are engaged by the projection 8 at one side only and the other at both sides as the armature is vibrated, substantially as described.

10. The magnet and its armature having the projection 8, combined with a vibrating lever having on it three fixed pins, two of which are in position to be engaged by the armature when attracted and the other in position to he engaged by the armature when retracted, substantially as described.

11. The magnet and its armature, combined with the lever e and locking device thereon, which co-operates with said armature in both its attractive and retractive positions, and means for vibrating said lever first to one and then to the other side of its position of rest on the successive vibration of the magnet, substantially as described.

12. The magnet and its armature, combined with the releasing-lever e and motor mechanism controlled by it, said releasing-lever having shoulders 9 10 at each side its pivot, which co-operate with the controlling member of the motor mechanism, substantially as and for the purposes set forth.

13. The magnet, its armature, the striking arm orlever, and controlling mechanism there for governed by said armature, said controlling mechanismcom prising the pivoted arm (2, having on it, at each side its pivot, a looking projection, and a double-toothed let-off, as d, borne by said striking arm or lever, substantially as described.

14. The electro-meohanical gong, the striking arm or lever, a double-toothed let-off carried by it, controlling mechanism having two locking projections with which said doubletoothed let-0ff co-operates, a magnet, and its armature governing the operation of said controlling mechanism, substantially as described.

15. In an electro mechanical gong, the toothed actuati rig-wheel, a reciprocating striking arm or lever which strikes the bell in each direction, two actuating-pawls therefor, which alternately engage said wheel, a controlling electro-magnet, and armature which looks the striking arm or lever at the beginning of each stroke in either direction, substantially as described.

10. In an electro mechanical gong, the toothed actuatingnvheel, a reciprocating striking arm or lever which strikes the bell in each direction, two actuating-pawls therefor, which alternately engage said wheel, a controlling electroqnagnet and armature, and intermediate locking device interposed between the armature and the striking-arm, which holds the striking-arm at the beginning of each stroke in either direction and is itself locked by the attracted and retracted armatnresnccessively, thereby requiring a complete vibration of the armature to allow successive strokes of the striking-arm, substantially as described.

17. The magnet and its arm atnre having the locking projection, as 8, combined with the three fixed pins 5' 6 7, arranged on a vibrating lever, which pins co-operate with the projection 8 of the armature, one, as 6, engaging at 15 the end of each vibration the other two, as5

7, acting; alternately to engage one before each vibration of the vibrating" lever, substantially as described.

In testimony whereof I have signed my 20 name to this specification in the-presence of two subscribing witnesses.

FREDERICK \V, COLE.

\Vitnesses:

BERNIOE JfNoYEs, EMMA J. BENNETT. 

